//
//  Library.h
//  OC05_练习
//
//  Created by dllo on 15/12/7.
//  Copyright © 2015年 dllo. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Book.h"

@interface Library : NSObject

@property (nonatomic, retain)NSMutableArray *arr;


/** 添加图书 */
- (void)addBook:(Book *)book;

/** 显示所有图书 */
- (void)listOfAllBook;








@end
